Transferring and revoking means for weft replenishing looms



Sept. 11, 1962 A. J.YHERARD 3,053,286

TRANSFERRING AND REVOKING MEANS FOR WEFT REPLENISHING LOOMS Filed May18, 1961 2 Sheets-Sheet 1 FIG. 2

"'M |"'I 58 FIG.

. 48 I 20 I9 I8 17 J mi 56 76 n l INVENTOR W ARCHIBALD J. HERARDATTORNEY Sept. 11, 1962 A. J. HERARD 3,053,286

TRANSFERRING AND REVOKING MEANS FOR WEFT REPLENISHING LOQMS Filed May18, 1961 2 Sheets-Sheet 2 FIG. 5 FIG 6 Ill 27 o o o 27 28 29 2a 78 M- l6l6 E B- l I 59 s 59 INVENTOR ARCHlBflD HERARD ATTORNEY United StatesFiled May 18, 1961, Ser. No. 110,967 26 Claims. or. 1s9 z31 Thisinvention relates to improvements in weft replenishing looms withparticular emphasis to bobbin transferring and revoking mechanisms, andit is the general object of the invention to associate these mechanismsto each other in a manner so as to render them more sensitive toresponse with respect to each other than has been contemplatedhereinbefore.

Looms of the type to which the present invention applies and which havegone into extensive use usually employ a reserve bobbin magazineoperating with bobbin transferring means including a transferring hammerremote from the transfer revoking means but connected thereto by aseries of levers, rods, springs, etc. so that transmission of force fromone to the other of the mechanisms, or vice versa, results in thedisadvantage of being slow and sluggish with a disappointing degree ofresponse between the mechanisms which oftentimes leads to faulty weftreplenishment, and also to nonrevocation when bobbin transfer revocationis needed due to a shuttle being misaligned with the magazine, as issometimes the case. Moreover, the type of loom referred to aboveoperates with the usual reciprocating lay having a bunter thereon toengage the usual transfer latch during a weft replenishing operationwith an impact to accelerate the latch and hammer connected thereto fromzero velocity instantly to the lay velocity with the resultantdisadvantage of unfavorable reaction of the transferring mechanisms inthe form of vibration to cause, in many instances, erratic and faultybobbin transfer from the magazine into the shuttle.

It is therefore an important object of the invention to overcome thedisadvantages discussed above by connecting the transferring andrevoking mechanisms adjacent each other to insure rapid response of themechanisms relative to one another, and by providing the transferringmechanism with means to effect acceleration of the transfer hammer fromzero velocity to lay velocity in a measured time period of the loomcycle to cause smooth operation of the transferring mechanisms and toavoid vibration thereof.

It is another object of the invention to positively interconnect themechanisms in a manner such that movement of either mechanisms willeffect simultaneous movement of the other mechanism whether suchmovement occurs during a weft replenishing operation or duringrevocation thereof.

Another object of the invention is to provide actuating means and meansdepending from the hammer respectively to be normally in nonactuatingand nonpick-up positions but movable incident to a weft replenishingoperation respectively to an actuating and pick-up position to establishan operable connection between the means during setting of the magazinefor movement from the actuating and pick-up position to effect a weftreplenishing operation.

It is another object of the invention to provide connecting means commonto the actuating and depending means and also to the revoking means toinsure said simultaneous movement.

Another object of the invention is to provide the revoking mechanismwith a shuttle feeler normally in nonshuttle feeling position andmovable incident a Weft replenishing operation to shuttle feelingposition and, when doing so, causing the actuating and depending meansto move successively for operable connection with each other due to thecommon connection.

Still another object of the invention is to provide placing means toinitiate placing of the shuttle feeler to shuttle feeling position, saidplacing means being operatively connected to the magazine and derivingits motion therefrom to effect setting of the transferring mechanism fora weft replenishing operation during movement of the shuttle feeler toshuttle feeling position.

And yet another object of the invention is to provide yielding means inthe form of a toggle between a fixed support and the revoking mechanismtending to rotate the latter in one direction to maintain the shuttlefeeler normally in nonshuttle feeling position and the actuating anddepending means in their nonactuating and nonpickup positionsrespectively, and yieldable to permit the placing means to intiallyrotate the shuttle feeler in the opposite direction after which theyielding means completes movement of the shuttle feeler in said oppositedirection to shuttle feeling position and the actuating and dependingmeans to engaging position incident to a weft replenishing operation.

A further object of the invention is to provide actuator means on agoing-part of the loom, such as a laysword, to engage the actuatingmeans when the latter is operably connected to the depending means toeffect a weft replenishing operation.

A still further object of the invention is to relate the shuttle feeler,the common means, and the actuating and depending means in such a mannerthat, during a weft replenishing operation, the shuttle feeler will bereset to nonshuttle feeling position due to the transferring operationwithout causing disengagement of the actuating and depending means, andthat, during revocation, movement of the shuttle feeler by a misplacedshuttle to nonshuttle feeling position will cause simultaneouslymovement of said common means and actuating and depending means toeffect separation of the latter two means to prevent a weft replenishingoperation.

In order that the invention may be clearly understood reference is madeto the accompanying drawings which illustrate by way of example theembodiments of the invention and in which:

FIG. 1 is a side elevational view as seen from the center of the loomhaving the invention applied thereto, certain of the parts being insection and certain of the parts being broken away for clarity,

FIG. 2 is a plan view looking in the direction of arrow 2, FIG. 1,

FIG. 3 is a vertical section looking in the direction of arrows 33, FIG.1,

FIGS. 4, 5 and 6 are diagrammatic operational views illustrating abobbin transferring operation,

FIG. 7 is a diagrammatic partial view illustrating the resetting ofcertain parts of the transferring mechanism after a weft replenishingoperation, and

FIGS. 8 and 9 are diagrammatic operational views showing revocation of atransferring operation due to a misplaced shuttle.

Referring particularly to FIG. 1, a loomside 1, of which there are two,supports a pivot shaft 2 on which a pair of layswords are mounted forreciprocation, there being only one laysword shown as at 3. Thelayswords, as is usual, mount at their upper ends a lay L for flightsupport of a shuttle S during loom operation. The loomsides journal acam shaft 4' which carries a set of conjugate cams generally indicatedat 5 operatively connected to a pair of rolls 6 and '7 on a lever 8pivoted as at 9 to a bracket 10 fixed to the loomside. Lever 8 at itslower end it has pivoted thereto as at 12 one end of a connecting rod 13which has its other end connected to a pivot 14 supported by a member 15attached to laysword 3 in any approved manner. The opposite end of theloom (not shown) is also provided with similar conjugate cams andconnections to the lay to aid cams 5 to reciprocate the lay at a givenvelocity during loom operation.

The loomside 1 supports a fixed stand 16 to which is attached a reservebobbin magazine generally indicated at M. The magazine is of usualconstruction and is provided with four stacks of bobbins designated at17, 18, 19 and 20. Each stack is under control of the usual verticalslides 21, 22, 23 and 24 respectively which are selectively raised andlowered, as is well known, by the usual horizontal color slide fingers25 and 26. The magazine M is provided with a transfer setting shaft 27rockable in right and left-hand bearings 28 and 29 on the magazine.Shaft 27 fixedly mounts thereon a shelf 30 engageable by one or anotherof the dogs 31, 32, 33 and 34 respectively of slides 1720 inclusive toeffect rotation of shaft 27 and lever 35 fixed thereto to set themagazine for a Weft replenishing operation upon indication of weftexhaustion in a shuttle by a weft feeler not shown herein but wellunderstood in the art.

The magazine and the operation thereof is well known and it is deemedsufficient to state here that upon indication by a weft feeler ofdepletion of a bobbin in a shuttle, shaft 27 and lever 35 thereon willbe rocked from the position in FIG. 1 to that of FIG. 5 to place one ofthe bobbins from either of the stacks, depending upon selectivity byslide fingers 25 and 26, to a transfer station generally designated bythe character reference TS, see FIGS. 1 and 5. Rocking of shaft 27, asdescribed above, will set the magazine and the transferring and revokingmechanisms, yet to be described, for a weft replenishing operation.Subsequently the bobbin at the transfer station will be transferred intoa depleted shuttle by a bobbin transferring hammer 36 describedhereinafter. The magazine forms no part of ti e present invention,except as set forth hereinafter, as neither does the cam driven lay, thedrive mechanism therefor being set forth in copending application,Serial No. 110,945, filed on May 18, 1961 by Clarence R. Kronoflf.

In carrying the present invention into effect, see FIGS. 1-3, thetransferer hammer 36 has a depending rod means 37 pivoted at its upperend as at 33 to the hammer and its lower end free and suspended andyieldingly held in a relatively forward position with respect to thefront of the loom. The lower end of rod 37 carries a lower bifurcatedrod head head 3? formed with a pair of spaced prongs 40 and 42 bridgedby a stud 43 to form a closed slot 44. The upper end of rod 37 hassecured thereto an upper rod head 41 on pivot 38, rod heads 39 and 41being adjustably secured to rod 37.

A support 45 is fixed to the loomside in any approved manner and isprovided with a pivot 46 on which a revoking mechanism generallyindicated at 47 is pivoted. The revoking mechanism includes an operativeconnection in the form of a rotatable support or lever 48 movable aboutpivot 46 and carries a shuttle feeler 49 normally in forward nonshuttlefeeling position as shown in FIG. 1. A sliding rod 51, see FIG. 2, hasone end thereof pivoted to a shoulder bolt 52 on arm 48 and the otherend thereof passing through a rotatable stud 53 on the fixed support 45.A compression spring 54 is interposed between shoulder bolt 52 and stud53 to form toggle means which is located between the shuttle feelersupport 48 and fixed support 45. A pair of stop screws 55 on rod 51limits movement of the support 48 about pivot 46 in both counter andclockwise directions. As can be seeen in FIG. 1, the toggle means exertsa force in a direction about pivot 46 to maintain the movable supportand operative connections in nonoperative position, and as shown in FIG.5, the toggle means acts in the opposite direction to hold the supportand connections in operative position for weft replenishment.

Support 48 has fixed thereon and forwardly of pivot 46 a pin 56 on whicha two-armed lever generally designated at 57 is rockable on and movablewith support 48. Upper arm 58 of lever 57 is formed with a U-shaped part59 to partially encircle rod 37, and lower arm 61 of lever 57 isoperatively connected to a lever cam generally designated at 62 by meansof a pin 63 on lever 62 and a slot 64 in lower arm 61. Resilient meansin the form of a spring 65 has one end trained around and held by anchor66 on fixed support 45 and the other end free against rod 37 to exert aforce in a direction to maintain rod 37 seated in U-shaped part 59 andin normal nonpick-up position. Lever 57 may be considered as primary orcommon connecting means between the revoking mechanism 47 and rod 37which may be termed secondary force transmitting means, and lever cam 62may be referred to as actuating or primary force transmitting means.

Referring particularly to FIG. 1, lever cam 62 at one end thereof ispivoted as at 67 to loomside 1 and is provided with latching meansincluding a reduced part 68 at the other end thereof to form a shoulder69 for operable connection with pin 43. Lever 62 has adjustably mountedthereon a cam plate 71 having a rearwardly facing inclined surface 72for engagement by actuator means including a force applying roll 73 on abracket 74 fixed to laysword 3. Lever cam 62 is normally out of the pathof travel of actuating means 73. Hammer 36, rod 37, levers 57 and 62 maybe termed as bobbin transferring mechanisms.

With reference to FIGS. 2, 4 and 5, movable support 48 carries a secondpin 76 slidable in a closed slot 77 formed at the lower end of a rod 78,the upper end of which is pivotally connected to lever 35 on settingshaft 27. Rod 78 may be considered as placing means for revoker 47, andshaft 27 may be termed as means to set the magazine for a weftreplenishing operation. It is to be noted that in effect movable support48 and revoker 47 are one and the same, being utilized to carry shuttlefeeler 49.

During loom operation, the shuttle S will be picked back and forthacross the loom in any approved manner and will in the weaving processlay weft filling, not shown, from a bobbin B in shuttle S, see FIG. 1.Upon depletion of the weft on bobbin B the magazine will be given anindication by a weft feeler, also not shown, whereupon either of thecolor slides 25 and 26 will raise one or the other of the slides 21-24in the usual manner to place either of the dogs 31-34 over shelf 30 asthe case may be. Subsequently, color slides 25 and 26 will have a downmotion to lower the selected vertical slide to cause its correspondingdog to engage shelf 30 and rock the latter and lever 35 from theposition shown in FIG. 1 to that shown in FIG. 5. Rocking of shaft 27,as is usual, sets the magazine for a weft replenishing operation, thatis, it effects movement of one of the bobbins 17-20 to the transferstation TS as illustrated in FIG. 5.

When shaft 27 is rocked as discussed above, rod 78 will be liftedupwardly and the lower end thereof will move pin 76 also upwardly andabout pivot 46 to initiate raising of the shuttle feeler from nonshuttlefeeling position in FIG. 1 to that of FIG. 4. During the initialmovement of rod 78, shuttle feeler 49 and bolt 52 will be partiallyraised about pivot 46 to the extent to permit spring 54 to exert a forcein a counterclockwise direction to complete lifting of the shuttlefeeler from the position shown in FIG. 4 to shuttle feeling positionshown in FIG. 5. Rotation of the shuttle feeler about pivot 46 causespin 56 and lever 57 to be lifted around pivot 46. During initialrotation of the shuttle feeler counterclockwise, lever 57 will raiselever 62 from nonactuating position of FIG. 1 to the position shown inFIG. 4 and will also move pin 43 by reason of U-shaped part 59 adjacentto reduced part 68. Continued motion of the shuttle feeler will beeffected by spring 54 to cause part 68 to be raised to actuatingposition and pin 43 moved below shoulder 69 to pick-up position withpart 68 between prongs 40 and 42 in slot 44 to establish an operableconnection between lever 62 and rod 37. The loom is now set for a weftreplenishing operation, and it is to be noted that the force exerted byspring 54 is greater than that exerted by spring 65 and that the lattercannot unseat pin 43 from shoulder 69. At this time the lay is in itsback position as shown in FIG. 5, and as the lay moves forwardly byreason of cams 5 roll '73 will engage surface 72 on lever 62 toaccelerate the latter from zero velocity to lay velocity in a measuredtime period of the loom cycle to cause rod 37 and head 75 on hammer 36to move downwardly from pick-up and actuating positions to transfer abobbin from the transfer station into the shuttle S as can be seen inMG. 6. When the operative connection 57 is raised, actuating means 62and depending means 37 will move successively to actuating and pick-uppositions, i.e., means 62 will be in actuating position be fore means 37is in pick-up position.

During the bobbin transferring operation, lever 6-2 and pivot 56 will bemoved downwardly and clockwise, thereby lowering and rotating shuttlefeeler 49 to its nonshuttle feeling position.

When the transferring operation is completed as shown in FIG. 6, the laywill recede and a spring 80 on hammer pivot 81 will act to return hammer36 and consequently rod 37 to the position shown in FIG. 1. Duringreturn of the transferring hammer, lever 62 will be lifted from thedotted line position to the full line position in FIG. 7 and rod 37 willslide along U-shaped part 59 during which spring 65 will exert a forceto unseat pin 43 from shoulder 69 to effect movement of rod head 39 fromthe full line position to the dotted line position. During unseat-ing ofpin 43, the force of spring 54 will be exerted clockwise about pivot 46and will not oppose the unseating force of spring 65. Upon completion ofunseating pin 43 from part 68, the magazine and associated parts will bein readiness for further transferring operations. It will be noted fromthe various figures that the revoking and transferring mechanisms areinterconnected and adjacent each other so that the force transmittedfrom roll 73 to lever 62 is positively and simultaneously transmittedtherefrom to lever 57, rod 37 and hammer 36. This force is alsotransmitted to pin 56 simultaneously so that during weft replenishingoperation the shuttle feeler will move also simultaneously with levers57 and 62 and rod 37 but will not cause disengagement of pin 43 fromshoulder 69.

In the event that a shuttle is not properly aligned with the transferstation incident a weft replenishing operation, the shuttle feeler willact to revoke the transfer. FIG. 8 represents a condition of a misplacedor a misaligned shuttle with the latter engaging the shuttle feeler asthe lay is advancing. Roll 73 has not yet contacted surface 72, and asthe lay continues to advance, shuttle S will move the shuttle feeler andpin 56 positively forwardly and rotationally about pivot 46 to effectquick response of the lever 57 which will move downwardly to lower levercam 62 without roll 73 depressing surface 72. After the shuttle hasmoved the shuttle feeler a short distance, spring 54 will be in aposition to exert a clockwise force about pivot 46 and will act to snapthe shuttle feeler about its pivot 46 to nonshuttle feeling position asin FIG. 9. It will be noted that during setting of the transferring andrevoking mechanisms for a weft replenishing operation as shown in FIGS.5 and 8 pin 76 will be in the upper part of slot 77 when the shuttlefeeler has reached shuttle feeling position. Consequently, the togglecan act rather rapidly to lower the pin and shuttle feeler after itspositive initial movement by the shuttle to effect rapid lowering ofsurface '72 so that roll 73 will have no effect on surface 72 and cannotcause a faulty weft replenishing operation when a shuttle is misplaced.

From the foregoing it will be seen that simple means have been providedto effect a smooth weft replenishing operation by virtue of the factthat roll 73 will accelerate lever 62 from Zero velocity to the layvelocity in a measured time of the m cycle and thus avoid undesiredvibration of the transferring mechanism. Also it will be seen that therevoking and transferring mechanism are interconnected by common meansand adjacent each other in a manner such that a graduate movement of oneof the mechanisms will effect positive and graduate movement of theother so that response to revocation will be quite sensitive and rapid.Further, it will be seen that resetting of the revoker mechanism duringa Weft replenishing operation is accomplished by the operation of thetransferring mechanism without disturbing the setting thereof. Also,simple yielding means has been provided to maintain the revoking andtransferring mechanisms respectively in either nonshuttle feelingposition and nontransferring position, or respectively in shuttlefeeling position and shuttle transfer-ring position respectively as thecase may be, the yielding means being of the nature to permit movementof the mechanisms from one to another of said positions and vice versa.

I claim:

1. In a weft replenishing loom operable to replenish a depleted bobbinin a shuttle and having a reserve bobbin magazine provided with a bobbintransferring hammer and a transfer setting shaft rockable to set themagazine for a weft replenishing operation upon Weft depletion of abobbin, means depending from said hammer normally in a nonpick-upposition but movable during setting of the magazine to a pick-upposition for movement therefrom to cause movement of said hammer toeffect a weft replenishing operation, actuating means for cooperationwith said depending means normally in nonactuating position and movableto actuating position for operable connection with said depending meansincident to a weft replenishing operation, operative connections betweensaid depending means and said actuating means to move both meansrespectively to pick-up and actuating positions, and placing meansbetween said setting shaft and said operative connections to effectmovement of the latter to establish said operable connection duringsetting of the magazine for a weft replenishing operation.

2. The loom set forth in claim. 1 wherein said depend ing means includesa rod having one end thereof adjustably secured to an upper rod headpivotally mounted on said hammer and having the other end thereofadjustably secured to a lower rod head having a stud for engagement bysaid actuating means to depress said hammer during weft replenishingoperation.

3. The loom set forth in claim 2 wherein the lower rod head isbifurcated to form a pair of depending prongs through which said studextends to form a closed slot for entrance of said actuating meanstherein.

4. The loom set forth in claim 1 wherein said actuating means includes alever pivoted at one end to a stationary part of the loom and providedwith a reduced part of the other end to form a shoulder for operableconnection with said depending means and also provided with a pinoperatively connected to said operative connections.

5. The loom set forth in claim 1 wherein said operative connectionsinclude a pivoted vertical lever, the lower end thereof being providedwith a slot for connection with said actuating means and the upper endthereof being provided with a U-shaped part to freely surround thedepending means, and a rotatable support to which said vertical lever ispivoted bet-ween. its ends, said rotatable support being pivoted at oneend thereof to a fixed support and having a pin operatively connected tosaid placing means.

6. The loom set forth in claim 5 wherein said operative connections alsoinclude resilient means interposed be tween said rotatable support andsaid fixed support to form a toggle connection therebetween.

7. The loom set forth in claim 5 wherein said operative connections alsoincludes a spring means having one end thereof pivoted on said fixedsupport and having a free end for engagement with said depending mean-s,said spring means exerting a force in a direction to maintain saiddepending means seated in said U-shaped part.

8. The loom set forth in claim 1 wherein said placing means includes avertical rod having one end thereof pivotally connected to said settingshaft and the other end thereof provided with a closed slot for pivotaland sliding connection to said operative connections.

9. In a Weft replenishing loom operating to replenish a depleted bobbinin a shuttle and having a reserve bobbin magazine provided with a bobbintransferring hammer and a transfer setting shaft operating to set themagazine for a weft replenishing operation upon weft depletion of abobbin, depending means pivoted to said hammer normally in a forwardnonpick-up position but movable rearwardly during setting of themagazine to a pick-up position for movement therefrom to effect movementof said hammer to replenish a shuttle, actuating means for cooperationwith said depending means normally down in non-actuating position andmovable upwardly to actuating position for operable connection with saiddepending means incident to a weft replenishing operation, operativeconnections between said depending means and said actuating means tosimultaneously move both means respectively to pick-up and actuatingpositions to establish said operable connection, said operativeconnections acting to move said actuating means to said actuatingposition before said depending means reaches said pick-up position,placing means between said setting shaft and said operative connectionsto effect movement of the latter during setting of the magazine for aweft replenishing operation, and actuator means to engage said actuatingmeans when the latter and said depending means ore operably connected tomove said actuating and depending means to effect a weft replenishingoperation.

10. The loom set forth in claim 9 wherein said actuating means is alever pivoted at one end and includes an adjustably fixed plate on saidlever having an inclined surface for engagement by said actuator meanswhen actuating means is in said actuating position.

11. The loom set forth in claim 10 wherein said inclined surface facesthe rear of the loom and is normally out of the path of travel of saidactuator means and movable into said path for engagement by saidactuator means upon setting of the magazine.

12. The loom set forth in claim 9 wherein said actuator means is a rollon a going part of the loom during operation thereof.

13. The loom set forth in claim 12 wherein said going part isreciprocating laysword adjacent said actuating means.

14. In a weft replenishing bobbin changing loom provided with a pair oflayswords reciprocating at a given velocity and a reserve bobbinmagazine operating with a bobbin transferring hammer and a transfersetting shaft rockable to set the magazine for a weft replenishingoperation upon depletion of a bobbin, actuator means on one of saidlayswords and movin therewith at said given velocity, hammer actuatingmeans normally out of the path of said actuator means and movable intothe path thereof during setting of the magazine for engagement with saidactuator means, depending means pivoted to said hammer having a free endnormally away from said actuating means but operatively connectablethereto upon movement of said actuating means into said path, operativeconnections between said actuating and depending means to move said freeend into connection with said actuating means, placing means betweensaid setting shaft and said operative connections to move the latter toplace said actuating means in said path, and cam means on said actuatingmeans provided with a surface for engagement by said actuator means whenthe actuating means is in said path, said surface being of aconfiguration to effect acceleration of said actuating means from zerovelocity to said given velocity in a measured time period of the loomcycle to effect a weft replenishing operation.

15. In a weft replenishing loom operating to replenish a bobbin-carryingshuttle and having a reserve bobbin magazine operating with a bobbintransferring hammer and a transfer setting shaft rockable to set themagazine for a weft replenishing operation upon depletion of weft insaid shuttle, depending means pivoted at one end to said hammer andhaving the other end normally in a nonpick-up position but movable to apick-up position for movement therefrom to effect movement of saidhammer to replenish a depleted shuttle, pivoted actuating means for saiddepending means normally in nonactuating position and movable toactuating position for operable connection with said depending meanswhen the latter moves to said pick-up position incident to a weftreplenishing operation, operative connections between said actuating anddepending means normally in nonoperative position but movable tooperative position incident to a weft replenishing operation, a movablesupport for said operative connections movable therewith and mounting apivot therefor, a fixed support for said movable support, a pivot forsaid movable support on said fixed support, placing means between saidsetting shaft and said movable support to initiate movement of thelatter during a magazine setting operation, resilient means having oneend mounted on said fixed support and the other end exerting a force onsaid depending means to maintain the latter normally in said nonpick-upposition, and spring toggle means between said movable support and saidfixed support capable of exerting a force in a direction to maintainsaid movable support and operative connections in said nonoperativeposition and capable of exerting a force in a direction to move saidmovable support and said operave connections to said operative positionsubsequent to initial movement by said placing means to establish saidoperable connection.

16. The loom set forth in claim 15 wherein said spring toggle meansexerts a force greater than said resilient means to overcome resistancethereof when said operative connections are moved to said operativeposition.

17. The loom set forth in claim 15 wherein said toggle means includes arod pivoted at one end to said movable support and having its other endfreely slidable in a rotatable stud pivoted on said fixed support, and acompression spring interposed between said one end and said rotatablestud, said spring tending to rotate said movable support in onedirection when the latter is in nonoperative position and acting torotate said movable support in a direction opposite said one directionsubsequent said initial movement.

18. In a weft replenishing bobbin changing loom operating with a pair ofreciprocating layswords and having a reserve bobbin magazine operatingwith a bobbin transferring hammer and a transfer setting shaft rockableto set the magazine for a weft replenishing operation upon weftdepletion of a bobbin, rod means pivotally depending from said hammerand having its lower end normally free in a forward nonpick-up positionand movable to a rear pick-up position incident to a weft replenishingoperation, pivoted cam means normally down in nonactuating position butmovable upwardly to actuating position incident to said replenishingoperation, a pair of interconnected lever means between said rod and cammeans operative incident to said replenishing operation to move said cammeans upwardly to its actuating position in advance of said rod meansWhile moving the latter rearwardly to its pick-up position forconnection with said cam means, placing rod means connected at its upperend to said setting shaft and at its lower end to one of said pair oflevers to effect movement of said levers by said setting shaft to placesaid depending rod and cam means respectively in said pick-up andactuating positions during setting of the magazine, and cam depressingmeans on one of said layswords to depress said cam means when the latteris in actuating position to cause said depending rod means to move thetransfer hammer downwardly to effect a weft replenishing operation.

19. The loom set forth in claim 18 wherein one lever of said pair ofinterconnected levers has an upper arm connected to said depending rodmeans and a lower arm connected to said cam means and is pivotallysupported between said arms to the other lever of said pair ofinterconnected levers, said other lever being pivotal at a pointrearwardly of the point at which said one lever is pivoted, therelationship of the two levers and their pivots being such that whensaid other lever is moved by said placing rod means to effect moving ofsaid cam means to said actuating position, the said one lever will alsomove and said upper arm thereof will have a vertical and rearward motionto place the lower end of said depending rod means in pick-up positionwith respect to said cam means after the latter has reached saidactuating position.

20. In a weft replenishing loom operating to replenish a depleted bobbinand having a reserve bobbin magazine provided with a bobbin transferringhammer and a transfer setting shaft operating to set the magazine for aweft replenishing operation upon weft depletion of a bobbin, primaryforce transmitting means normally in nonforce transmitting position andmovable to force transmitting position during setting of the magazine,secondary force transmitting means between said hammer and said primaryforce transmitting means and normally disconnected therefrom to preventa force transmitting relationship, primary operative connections commonto said primary and secondary force transmitting means movable toestablish said force transmitting relationship therebetween incident toa weft replenishing operation, secondary operative connections common toand between said setting shaft and said primary operative connections tomove the latter to cause said force transmitting relationship duringsetting of the magazine by the setting shaft, and force applying meansto engage said primary means to apply a force thereto to move theprimary and secondary means to transmit a force to said hammer subsequent to establishment of said force transmitting relationship to effecta weft replenishing operation.

21. In a weft replenishing bobbin changing loom having a bobbin reservemagazine with a transfer setting shaft rockable in one direction to setthe magazine for a weft replenishing operation upon depletion of anactive bobbin and operating with a bobbin transferrer provided with apivot and a bobbin engaging head, force transmitting means having oneend thereof pivoted to said transferrer between said pivot and said headand having the other end normally in nonforce transmitting position butmovable to force transmitting position incident to a weft replenishingoperation, other force transmitting means including latching meansnormally located away from said other end but movable for latchingengagement therewith during movement of said force transmitting means tosaid force transmitting position, operative connections between saidforce transmitting and said latching means operable to move both lattermeans to latching engagement, an operative connection between thesetting shaft and said operative connections to move the latter when 60said setting shaft is rocked in said one direction to effect movement ofsaid force transmitting and latching means to establish said latchingengagement, force applying means to engage said other force transmittingmeans when said latching means and said force transmitting means are insaid latching engagement to transmit a force through both latter meansto said transferrer to effect movement thereof to cause said weftreplenishing operation, and yielding means acting on said forcetransmitting means to yieldingly maintain said other end in saidnonforce transmitting position and yielding to permit said forcetransmitting means to move to said force transmitting position incidenta weft replenishing operation, said yielding mitting means with respectto said latching means subsequent a weft replenishing operation.

22. In a weft replenishing loom operable to replenish depleted shuttlesand having a reciprocating lay mounted on layswords and also having areserve bobbin magazine provided with a bobbin transfer station and abobbin transferring hammer and a magazine transfer setting shaftrockable to effect movement of a reserve bobbin to said station to setthe magazine for a weft replenishing operation upon depletion of ashuttle, vertically movable means pivoted on and depending from saidhammer and normally in an inactive position and swingable to an activehammer moving position incident to a weft replenishing operation,actuating cam means between the lay and the depending means normally innonactuating position but movable to actuating position incident to saidweft replenishing operation for operable connection with said verticallymovable means, means mounted on one of said layswords for engagementwith said actuating means when the latter is in actuating position tocause movement of said vertically movable means to effect a weftreplenishing operation, operative connections between said verticallymovable and said actuating means to move both means respectively tohammer moving and actuator positions, shuttle feeler means pivotallyconnected to said operative connections normally in nonshuttle feelingposition and movable to shuttle feeling position incident to a weftreplenishing operation, placing means between said shuttle feeler meansand said setting shaft to effect simultaneous movement of the shuttlefeeler to shuttle feeling position and successive movement of saidactuator and vertically movable means respectively to said actuating andhammer moving positions when said setting shaft rocks to set themagazine for a weft replenishing operation, and interconnecting meansbetween the shuttle feeler means and said placing means to permitresetting of the shuttle feeler means without disengaging said operableconnection during a weft replenishing operation.

23. The loom set forth in claim 22 wherein said interconnecting means isa pin and slot connection, said pin being on said shuttle feeler meansand said slot being on said placing means.

24. In a weft replenishing loom having a magazine employing atransferring hammer to transfer bobbins from the magazine into a shuttleupon depletion of a "bobbin in a shuttle, setting shaft means rockableto set the magazine for a bobbin transferring operation when saiddepletion occurs, depending means pivoted at one end to said hammer andhaving the other end normally in a nonpick-up position but movable to apick-up position during setting of the magazine, pivoted cam meansnormally disengaged from said depending means and movable to saidpick-up position for engagement with said depending means, a shuttlefeeler pivoted to a fixed support and provided with a pin for movementtherewith, a lever mounted on said pin having one end connected to saiddepending means and the other end connected to said cam means, a secondpin on said shuttle feeler movable' therewith, placing means betweensaid second pin and said setting shaft operating incident to a weftreplenishing operation to move said shuttle feeler from a nonshuttlefeeling position to a shuttle feeling position, and yielding meansbetween said shuttle feeler and fixed support acting to normally holdthe shuttle feeler in said 5 nonshuttle feeling position and yieldingtopermit movement of the shuttle feeler to shuttle feeling position andthereafter maintaining the feeler in the latter position until moved bythe transferring mechanism during a weft replenishing operation orengaged by a misplaced shuttle 0 in which event the feeler will be movedto nonshuttle feeling position to effect revocation of a weftreplenishing operation by causing disengagement of said depending meansfrom said cam means.

25. In a weft replenishing loom provided with a remeans also acting toeffect unlatching of the force transserve bobbin magazine operating toreplenish a shuttle upon depletion of a bobbin therein, said magazinebeing provided with a bobbin transfer station normally aligned with thebobbin in the shuttle during loom operation, a bobbin hammer to transfera bobbin from said station to said shuttle during a weft replenishingoperation, depending means pivoted to said hammer and having its lowerend normally in a nonengageable position but movable to an engageableposition incident a weft replenishing operation, cam means also normallyin a nonengageable position but movable to said engageable position toengage said depending means when the latter moves to said engageableposition, a shuttle feeler pivoted to a fixed support and movable fromnonshuttle feeling position to shuttle feeling position when saiddepending and cam means move to said engageable position, an operativeconnection common to the shuttle feeler and said depending and cammeans, means operating from the magazine to move said shuttle feeler tosaid shuttle feeling position while at the same time effectingsimultaneous movement of said depending and cam mean to said engageableposition, and means to engage said cam means when in said engageableposition to move the cam means to effect a weft replenishing operationand also to effect movement of the shuttle feeler to nonshuttle feelingposition during said weft replenishing operation.

26. For a bobbin transferring loom, bobbin transferring mechanismincluding a bobbin transferring hammer having a hammer moving rodpivoted thereon, a rod moving lever cam separate from said rod butengageable therewith, common lever means adjacent and connected to andbetween said rod and said lever cam movable to cause engagementtherebetween incident to a bobbin transferring operation, revokingmechanism including a shuttle feeler pivoted on said common lever meansand also on a fixed support, and bobbin transfer setting means common tosaid shuttle feeler and said common lever including a rod connected tothe shuttle feeler and movable incident a bobbin transferring operationto set the revoking mechanism to revoking position and the transferringmechanism to bobbin transferring position.

References Cited in the file of this patent UNITED STATES PATENTS2,627,284 Kronoif et a1. Feb. 3, 1953 2,627,285 Krunkonis et al Feb. 3,1953 2,627,286 Wakefield Feb. 3, 1953

